Nrog rau txoj kev loj hlob sai ntawm kev lag luam steel, txhawm rau txhim kho cov khoom tsim tawm ntawm cov hlau thiab txhim kho kev siv tus nqi thiab kev tsim khoom ntawm cov dov zeb, txo lub sij hawm kaw ntawm cov dov zeb, siv cov tungsten carbide cov menyuam nrog lub neej ua haujlwm ntev yog qhov tseem ceeb. txoj kev.

Dab tsi yog Tungsten Carbide Cov Menyuam

Cov cemented carbide roller, tseem hu ua cemented carbide roller nplhaib, hais txog ib yob ua los ntawm tungsten carbide thiab cobalt los ntawm cov hmoov metallurgical txoj kev. Lub tungsten carbide yob muaj ob hom kev sib xyaw thiab ua ke. Nws muaj kev ua tau zoo tshaj, ruaj khov zoo, kev ua haujlwm siab nrog kev hnav zoo heev thiab kev ua haujlwm siab. Carbide roller yog dav siv rau dov ntawm tus pas nrig, hlau pas nrig, threaded steel thiab seamless steel yeeb nkab, uas zoo heev txhim kho kev ua hauj lwm efficiency ntawm lub dov zeb.

High Performance Ntawm Tungsten Carbide Cov Menyuam

Carbide yob muaj ib tug siab hardness thiab nws hardness nqi txawv me me nrog kub. Tus nqi hardness nyob rau hauv 700 ° C yog 4 zaug siab dua cov high-speed steel. Lub elastic modulus, lub zog compressive, lub zog dabtsi yog khoov, thermal conductivity kuj yog 1 npaug siab dua cov cuab yeej hlau. Txij li thaum lub thermal conductivity ntawm cov cemented carbide yob yog siab, cov cua kub dissipation nyhuv yog zoo, yog li ntawd lub nto ntawm yob nyob rau hauv high kub rau ib lub sij hawm luv luv thiab yog li lub high-temperature cov tshuaj tiv thaiv lub sij hawm ntawm teeb meem impurities nyob rau hauv cov dej txias thiab lub yob yog luv dua. Yog li ntawd, cov tungsten carbide rollers muaj kev tiv thaiv corrosion thiab txias thiab kub qaug zog dua li cov cuab yeej steel rollers.

Qhov kev ua tau zoo ntawm tungsten carbide rollers muaj feem xyuam rau cov ntsiab lus ntawm daim ntawv cog lus hlau theem thiab qhov loj ntawm tungsten carbide hais. Cov tungsten carbide yog li ntawm 70% mus rau 90% ntawm tag nrho cov muaj pes tsawg leeg thiab qhov nruab nrab particle loj yog μm ntawm 0.2 mus rau 14. Yog hais tias cov hlau daim ntawv cog lus cov ntsiab lus yog nce los yog ua kom cov particle loj ntawm tungsten carbide, hardness ntawm cemented carbide txo thiab lub toughness yog zoo dua. Lub zog dabtsi yog khoov ntawm tungsten carbide roller nplhaib tuaj yeem ncav cuag 2200 MPa. Qhov cuam tshuam toughness tuaj yeem ncav cuag (4 ~ 6) × 106 J / ㎡, thiab HRA yog 78 txog 90.

Lub tungsten carbide cov menyuam tuaj yeem muab faib ua ob hom kev sib xyaw thiab sib xyaw raws li cov qauv tsim. Integral tungsten carbide cov menyuam tau siv dav hauv pre-precision dov thiab ua tiav ntawm kev kub ceev hlau dov mills. Composite cemented carbide cov menyuam yog ua los ntawm tungsten carbide thiab lwm yam ntaub ntawv. Cov sib xyaw carbide chais yog nrum ncaj qha mus rau hauv cov menyuam ncej, uas yog siv rau ib tug dov zeb nrog ib tug hnyav load.

Machining Method Ntawm Tungsten Carbide Cov Menyuam Thiab Xaiv Cov Cai Ntawm Nws Cov Cuab Yeej Txiav

Txawm hais tias cov khoom siv tungsten carbide zoo dua li lwm cov ntaub ntawv, nws yog qhov nyuaj rau kev ua haujlwm vim qhov hnyav hnyav thiab nws tau siv dav hauv kev lag luam steel.

1.Hais txog hardness

Thaum machining cov tungsten carbide yob nrog lub hardness me dua HRA90, xaiv HLCBN cov ntaub ntawv los yog BNK30 cov khoom siv rau ib tug loj npaum li cas ntawm tig thiab lub cuab tam tsis tawg. Thaum machining cov carbide cov menyuam nrog lub hardness ntau dua HRA90, CDW025 pob zeb diamond cuab yeej feem ntau xaiv los yog sib tsoo nrog pob zeb diamond sib tsoo log. Feem ntau, qhov siab dua qhov hardness yog, cov khoom yog crisper, yog li nws yog ceev faj ntau rau kev txiav cov ntaub ntawv siab hardness thiab lub caij nyoog reserved finishing sib tsoo nyiaj.

2.Qhov nyiaj pub rau machining thiab kev ua haujlwm

Kuvf cov txheej txheej yog machined thiab cov nyiaj pub dawb yog loj, feem ntau txais cov khoom siv HLCBN los yog BNK30 cov ntaub ntawv yuav tsum tau roughly processed, ces sib tsoo nrog ib tug sib tsoo log. Rau me me machining nyiaj pub dawb, cov menyuam tuaj yeem sib tsoo ncaj qha nrog lub log sib tsoo lossis profile ua tiav los ntawm cov cuab yeej pob zeb diamond. Feem ntau, txiav lwm txoj kev sib tsoo tuaj yeem txhim kho machining efficiency thiab txoj kev txiav yog qhov zoo dua rau kev txhim kho cov khoom txhuas lub sijhawm.

3.Passivating kev kho mob

Thaum machining ib tug tungsten carbide rau cov menyuam, passivating kev kho mob yog tsim nyog los txo los yog tshem tawm cov sharpness tus nqi, rau lub hom phiaj ntawm flatness thiab smoothness nrog siab durability. Txawm li cas los xij, kev kho passivation yuav tsum tsis txhob loj heev, vim hais tias qhov kev sib cuag ntawm lub cuab yeej yog loj tom qab passivation thiab txiav kuj tseem nce, uas yog ib qho yooj yim ua rau tawg, ua rau lub workpiece puas.

Dab tsi yuav tsum tau them nyiaj tshwj xeeb rau kev tsim khoom thiab siv tungsten carbide cov menyuam

Nyob rau hauv xyoo tas los no, tungsten carbide rollers tau txais kev siv ntau thiab ntau dua hauv kev tsim cov hlau nrog lawv cov kev ua tau zoo. Txawm li cas los xij, tseem muaj qee qhov teeb meem hauv kev tsim thiab siv cov carbide yob.

1. Tsim ib hom tshiab ntawm cov khoom siv rau cov menyuam. Cov pa luam yeeb hlau rau cov menyuam shafts yuav nyuaj rau kev tiv taus ntau dua dov lub zog thiab xa lub zog loj dua. Yog li kev ua haujlwm siab cemented carbide composite yob ncej cov ntaub ntawv yuav tsum tau tsim.

2. Thaum lub sij hawm tsim cov txheej txheem ntawm carbide rollers, qhov seem thermal stress tshwm sim los ntawm thermal expansion ntawm cov hlau puab thiab txheej cemented carbide yuav tsum tau txo los yog tshem tawm. Carbide residual thermal stress yog ib qho tseem ceeb cuam tshuam rau lub neej ntawm cov menyuam. Yog li ntawd, cov coefficient ntawm thermal expansion qhov sib txawv ntawm cov hlau sab hauv thiab sab nrauv cemented carbide yuav tsum tsawg li tsawg tau, thaum txiav txim siab tshem tawm qhov seem thermal stress ntawm carbide roller nplhaib los ntawm kev kho cua sov.

3. Vim yog qhov sib txawv ntawm qhov sib txawv ntawm lub zog dov, dov torque, kev hloov hluav taws xob ntawm cov racks sib txawv, cov racks sib txawv yuav tsum tau txais cov qib sib txawv ntawm tungsten carbide rollers kom ntseeg tau tias qhov kev sib tw tsim nyog ntawm lub zog, hardness, thiab cuam tshuam toughness.

Cov ntsiab lus

Rau dov ntawm hlau, pas nrig, tungsten carbide cov menyuam hloov cov pa cam khwb cia hlau rolls thiab alloy steel rolls, tau nthuav tawm ntau qhov zoo tshaj, nrog rau kev txhim kho txuas ntxiv ntawm cov txheej txheem tsim cov menyuam thiab siv thev naus laus zis, yuav txuas ntxiv nthuav cov ntawv thov ntawm carbide roller rings. thiab lawv yuav dhau los ua ib qho tseem ceeb hauv dov machining nrog kev siv dav dua.